// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

#pragma once

#include <string>
#include <vector>
#include <kmsql/postgre/nodes/list.h>
#include <kmsql/postgre/simplified_token.h>

namespace kmsql::pg {
    class PostgresParser {
    public:
        PostgresParser();

        ~PostgresParser();

        bool success;
        PGList *parse_tree;
        std::string error_message;
        int error_location;

    public:
        void Parse(const std::string &query);

        static std::vector<PGSimplifiedToken> Tokenize(const std::string &query);

        static PGKeywordCategory IsKeyword(const std::string &text);

        static std::vector<PGKeyword> KeywordList();

        static void SetPreserveIdentifierCase(bool downcase);
    };
}  // namespace kmsql::pg

